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lagus   the    family    is    terrestrial,,    and    its    numerous    species
progress  by  leaps  effected by the   long  hind-limbs, which   are

. 65,-—Skeleton of "Wallaby (Macropus iialttbatiix). The scapula ia raised some-
what higher than in nature. The end of the tail is omitted. The head of
the femur lias been separated from the acetabuluiu. accA, Acetahuhim j «cr,
ncromiott process ; «»£> astragalus ; cad, calcaueum ; chd, cuboid ; chei\ chevron-
bones ; clt clavicle ; own, cuneiform of carpus ; <'$ri, epipubia ; ,/V>, fibula ', fewi^
femur; hdt head of femur ; AM, huments ; il, ilium ; isch, isohiuux ; obt* obturator-
foramen ; OT(&» orbit ; pits, pitufonrn ; pnb, pubis ; rad* radius ; <rblt first rib ; rb™,
last rib ; «c, scapula ; $t, sternum ; tb, tibia ; track, great troehanter of femur ; uln,
ulua; ttnc, uuciforia; IV, fourth toe. (From Parker and Hoswell's Zotflotjy.}
decidedly, often greatly, longer than the fore-limbs. In the
hind-limb the fourth toe is very long and strong; the fifth
moderately so; the second and third are slender and united by
skin. The tail is always long, but differs in its characters from